fantastic idea, very handy for traveling,holidays,gigs, festivals 
UPDATE
I recently purchased this product and am very impressed so far i’ve used this more as a travel charger for my smartphone than a router but have had it up and running in router mode and it works perfectly!
TIP
To change the admin of the router to english add “ goform/setSysLang?en” (without the commas) to the end of the address of the admin page url in your browsers address bar, and hey presto admin is in english